Multiple routers same certificate

Hello evryone i would need some help please!

Scenario:

I have 5 MikroTik routers with 5 diffrent WAN IPs, for Windows clients i would like to create one CA that i would export from one of the mikrotiks and import to client, and with this cert they could connect to evry SSTP MikroTik routers.


So my idea is:

Router 1:

Create CA,
create Router1Cert => Sign with CA
create Router2Cert => Sign with CA
.
.
.
Export CA and Router1Cert

Router 2:
import Router1Cert
setup for use with sstp

the same with router 3, 4, 5.

Client:
Import CA cert
add vpn SSTP for router1,2,3,4,5 so they could connect with the same cert to all routers.

Can someone please give me some practical example how i would achive these.

Thank you for any advice in advance.

I hope i wrote clear enough